Designation:D7321−18aStandardTestMethodforParticulateContaminationofBiodieselB100BlendStockBiodieselEstersandBiodieselBlendsbyLaboratoryFiltration1ThisstandardisissuedunderthefixeddesignationD7321;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1ThistestmethodcoversthedeterminationofthemassofparticulatecontaminationinB100biodieselinaccordancewithSpecificationD6751andBXXblendsthatarepreparedagainstallNo.1andNo.2gradefuelsallowedwithinSpecificationsD396andD975.NOTE1—Middledistillatefuelswithflashpointslessthan38°Chavebeenignitedbydischargesofstaticelectricitywhenthefuelshavebeenfilteredthroughinadequatelybondedorgroundedglassfiberfiltersystems.SeeGuideD4865foramoredetaileddiscussionofstaticelectricityformationanddischarge.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D396SpecificationforFuelOilsD975SpecificationforDieselFuelOilsD1193SpecificationforReagentWaterD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4865GuideforGenerationandDissipationofStaticElec-tricityinPetroleumFuelSystemsD6751SpecificationforBiodieselFuelBlendStock(B100)forMiddleDistillateFuels3.Terminology3.1Definitions:3.1.1biodiesel,n—fuelc...
